Flooring



septjla, 1932. P. HOFER 1,877,508

FLOORING Filed May 6, 1929 E D d v n m Ddd E ATTYS.

Patented Sept. 13, 1932 UNITED s'm'res PAUL HOFER, BASEL, SWITZERLAND FLOORING Application filed May 6, 1929, Serial No. 360,821, and in Switzerland May 11, 1928. Y

In the manufacture of sound-proof and thermically insuiating floors, it has already been proposed touse an under-layer of corkmeal (nely divided cork) or the like for the i floor covering. As cork-meal is somewhat fluent, a subdivision of such under-layers into separate fields was provided by means of cases or listels embedded thereinto in order to prevent any travelling or displacement of the L cork-meal. However, such arrangements are reinforced self-sustaining covering capabler of uniformly distributing the charge of use.

Figures l and 2 of the accompanying drawing show by tivo partial sections perpendicular to one another the preferred form of the flooring according to the invention.

In this drawing, A is a reinforced concrete ceiling, B a layer of cork-meal distributed thereon and compressed'by means of con- 30 venient rammers to form a coherent bed of cork-meal, C a layer of tarred paper or like roofing material laid on said cork-meal layer, and D a self-sustained fioor covering having an upper attening layer cl and an embedded metallic reinforcement all so arranged that the covering can support its own Weight as Well as the eiective charging thereon. A.

layer of cork linoleum E may complete the` ,m floor. The covering D may be of any material convenient to such purposes, for Aexample of cement, concrete and Vso on. ItV does not Wholly extend to the side Walls of the room, being separated therefromV by vertical 45 insulating pressed cork plates e along Which it extends upwards up to a closing strip of. n Wood f. y

The reinforcement of the covering D is of great importance in so far as the same is thus rendered selfsustaining and capable of 50 uniformly distributing the charge Vof use, Which is of great advantage in the use of an underflayer of cork-meal. The covering thus ensures a uniform distribution of the load throughout the Whole lof the cork-meal bed 55 and'is strong enough to support the Whole of the charge. Obviously, its thickness and reinforcement depend on such charge. The thickness of the cork-meal layer may also vary. y y 'to In the cork-meal layer there may be embeddedv electrical conducts, tubes or the like, as indicated at in Figure l. Y A fioor of the kind described is convenient `for any rooms, especially owing to its soundproof and thermically insulating properties. A sinking or breaking of the upper covering can never take place.

What I claim is l. In soundproof and thermically insu- ."f lating flooring, the combination of a reinforced concrete ceiling, a compressed underlayer of loose cork-meal thereon, tarred paper or the like covering said cork-meal layer,

and an independently reinforced self-sus- T-" taining floor arranged tov freely ioat upon said cork-meal under-layer, the reenforcing elements of said floor terminating short of the side Walls ofthe room.

2. A room having a sound-proof and ther-V v' 'i mically insulating flooring, comprising in combination, Va reinforced concrete lower ceiling, acompressed underlayer of loose corkmeal thereon, thin tarred material covering said cork-meal layer, an independently reinforced self-sustaining floor mounted to freely fioat upon said cork-meal under-layer, the reenforcing elements ofsaidfloor being Vcontained entirely Within said floor, and being free from connection With external parts,

i Lenses' Y' pressed cork plates extending upwardly for a short distance from'the cork-meal layer kalong the Vertical .walls of the room, the reinforcedy floor extending upwardly along the n said walls for a short distance and being insulated therefrom by the said plates, and a Closing strip extending inwardly of the room from the Vertical walls adjacent the lower ends thereof for closing and sealing the said 4 floor.

In witness whereof I have hereunto signed niy name this th day of April, 1929. PAUL HOFER.

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